30 RED AGASTACHE 'HEATHER QUEEN' Hummingbrid Mint Hyssop Flower Herb Seeds BLOOM TIME: All Summer - Frost HARDINESS ZONE: 5 - 10 PLANT HEIGHT: 24 - 36" . . . PLANT SPACING: 15 - 18" LIGHT REQUIREMENTS: Sun - Part Shade . . . SOIL / WATER: Average - Dry Agastache is a fragrant, long blooming beauty, and Heather Queen is one of the most fragrant varieties. Its slender spikes of tubular flowers are a favorite of HUMMINGBIRDS, bees, & butterflies. This herb is very tolerant of dry conditions, so it is quite suitable for containers.